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St Ives Gold Mine Technical Short Form Report 31 December 2012 1

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St Ives Gold Mine Technical Short Form Report 31 December 2012 1. Overview The St Ives Gold Mining Company (Proprietary) Limited (St Ives) Salient featuru ess is wholly owned by Gold Fields Limited and is situated some 80 kilometres south of Kalgoorlie. The St Ives operations are X Mineral Resources at 4.7 Moz. conducted within mining tenements comprising 277 mining X Mineral Reserves at 2.2 Moz. titles (54,749 hectares), three mineral titles (364 hectares), 13 exploration licences (27,192 hectares), 22 prospecting X High-cost heap leach operation closed. licences (2,700 hectares) and 19 miscellaneous licences X Highly prospective tenement delivered new (14,500 hectares) for a total area of approximately exploration camp and Mineral Resources at 99,594 hectares. St Ives has security of tenure for all current Invincible. mining titles and exploration licences that contribute to the X Mineral Reserves. Neptune Mineral Resources and Mineral Reserves continue to grow; detailed technical St Ives represents a solid base for growth in Australia and is an planning initiated. important contributor to the Gold Fields’ vision of being “the X Hamlet well on track to achieve full production global leader in sustainable gold mining” with a target contribution in 2013. from the Australasia Region of approximately 0.7 Moz per annum X Life of Mine extends to 2018 (6 years). by 2015. St Ives currently operates four underground mines accessed via declines and several open pits, a centralised administrative office, an engineering workshop and CIP processing plant. Declared Mineral Resources at St Ives decreased by 490 koz primarily due to depletion and closure of the Leviathan, Formidable, Dianna, Minotaur and Britannia Footwall pits during 2012. The Mineral Reserves, inclusive of a depletion of 490 koz since December 2011, declined to 2.2 Moz (2.8 Moz at December 2011). Changes to Mineral Reserves from December 2011 were dominated by limited discoveries at Neptune and Cave Rocks, with nominal additions at Hamlet and Athena. Continued exploration success and increased drilling of the mine’s extensive greenfields project pipeline has led to further discoveries at the Incredible deposit, which now extends over 600 metres on-strike and is still open to the north. Further work is planned in 2013 to grow the deposit’s continuity and resource confidence. The St Ives Life of Mine (LoM) has been maintained at six years to 2018. This Technical Short Form Report reflects the latest LoM plan, coupled with an updated Mineral Resource and Mineral Reserve statement as at 31 December 2012. All Mineral Resource and Mineral Reserve figures reported are managed unless otherwise stated and Mineral Resources are inclusive of Mineral Reserves. Geographic location ` Page head Contents Geographic location IFC 1. Overview IFC 2. Asset fundamentals Page 2 3. Operating statistics Page 3 4. Geological setting and mineralisation Page 4 5. Mining Page 6 6. Projects Page 7 7. Mineral processing Page 8 8. Sustainable development Page 9 9. Mineral Resources and Mineral Reserves Page 10 10. Competent Persons Page 15 11. Key technical staff Page 15 12. Brief history Page 19 TThehe St Ives tenement holdings are locatedlocated inin thethe highlyhighly prospectiveprospective Norseman-Wiluna GreenstoneGreenstone Belt, whichwhich is part of the Yilgarn Craton,Craton, a 2.6 GaGa well mineralised granite-- greenstonegreenstone terrainterrain inin WesternWestern Australia where St IvesSt Ives operates a dynamicdynamic mixmix ofof open pitpit andand undergroundunderground mines.mines. Cover image: Open pit mining operations at St Ives Gold Mine Note: For abbreviations refer to page 27 and for glossary of terms refer to page 28 – “Mineral Resources and Mineral Reserves Overview 2012”. WConstruction of causeways and RC drilling on Lake Lefroy Gold Fields – St Ives Gold Mine – Technical Short Form Report 2012 1 2. Asset fundamentals Prepared by Gold Fields Limited in compliance with the South African Code for the Reporting of Exploration Results, Mineral Resources and Mineral Reserves (2007 SAMREC Code) Effective date 31 December 2012 Source of information This Technical Statement is a summary of the December 2012 St Ives Competent Persons Report (CPR) Personal inspection Personal inspection is conducted by the Competent Persons as listed, who are full-time employees of Gold Fields Limited Independent review Information reported in this declaration is as reviewed by internal consultants as at 31 December 2012. St Ives has been informed that the review identified no material shortcomings in any process by which the Mineral Resources and Mineral Reserves were evaluated General location The St Ives operations extend from 5 to 25 kilometres south-southwest of the town of Kambalda in Western Australia, approximately 630 kilometres east of Perth at latitude 31° 12’ S and longitude 121° 40’ E. The nearest major settlement is the town of Kalgoorlie situated 80 kilometres to the north. Well-established power, access roads and supporting infrastructure exist in the area Climate St Ives is situated in an area of arid bush land. While occasional storm activity may cause minor delays to open pit mining operations, the climatic conditions do not materially impact on the normal operations of the site Licence status and St Ives controls exploration and mineral rights over a total area of 99,594 hectares (total of holdings granted tenements) and has security of tenure for all current exploration and mining leases that contribute to future Mineral Reserves Operational St Ives currently operates four underground mines which are accessed via declines, several open infrastructure pits, a centralised administrative office, an engineering workshop and a CIP processing plant Deposit type Archaean orogenic greenstone gold hosted in a number of different styles of mineralisation Life of Mine (LoM) It is estimated that the current Mineral Reserve will be depleted in 2018 (6 years) Environmental/Health The mine maintained AS 4801:2000 occupational health and safety management system and Safety certification and ISO 14001:2004 environmental management system certification. St Ives was certified as fully compliant with the International Cyanide Management Code on 3 June 2009 Reporting codes Gold Fields reports its Mineral Resources and Mineral Reserves in accordance with the 2007 SAMREC Code, the South African Codes for the Reporting of Mineral Asset Valuation (2009 SAMVAL Code) and other relevant international codes such as the United States Securities and Exchange Commission (SEC) Industry Guide 7, the Joint Ore Reserves Committee (JORC 2012) Code and the National Instrument (NI) 43-101. The Mineral Resources and Mineral Reserves are underpinned by an appropriate Mineral Resource management process and protocol to ensure adequate corporate governance in respect of the Sarbanes-Oxley Act Resource definition drilling on Open pit mining operations Underground mining operations Lefroy Mill/CIL Plant at dusk Lake Lefroy (development drill rig) 2 Gold Fields – St Ives Gold Mine – Technical Short Form Report 2012 3. Operating statistics Dec Dec Dec June June Historic performance Units 2012 2011 20101 2010 2009 Open pit mining Total mined kt 16,518 18,728 8,653 32,718 30,602 – Waste mined kt 12,356 14,421 6,566 26,059 24,803 – Ore mined kt 4,162 4,307 2,087 6,660 5,799 Mined grade g/t 1.5 1.8 1.9 1.4 1.5 Strip ratio (volume) waste:ore 3.0 3.4 3.3 4.2 4.3 Underground mining Total mined kt 2,528 2,524 1,242 2,049 1,789 – Waste mined kt 903 756 339 605 567 – Ore mined kt 1,626 1,768 904 1,444 1,222 Mined grade g/t 5.1 4.7 4.9 4.7 5.1 Processing Total tonnes kt 7,038 6,745 3,284 6,819 7,262 – Mill tonnes kt 4,751 4,793 2,419 4,766 4,821 – Heap leach tonnes kt 2,287 1,952 866 2,052 2,441 Combined head grade g/t 2.2 2.4 2.6 2.2 2.1 – Mill head grade g/t 2.9 3.0 3.2 2.7 2.8 – Heap leach head grade g/t 0.7 0.9 0.8 0.9 0.8 Combined yield g/t 2.0 2.1 2.3 1.9 1.8 – Mill yield g/t 2.8 2.8 3.0 2.5 2.5 – Heap leach yield g/t 0.4 0.5 0.5 0.5 0.5 – Mill % 94 94 94 93 91 Plant recovery factor – Heap leach % 51 55 58 56 56 Gold produced koz 450 465 243 421 428 Total gold production kg 13,991 14,449 7,557 13,097 13,322 – Mill koz 423 433 230 389 394 – Heap leach koz 27 31 13 32 37 Gold sold koz 450 465 243 421 428 Financials Operating cost A$/oz 884 867 781 832 806 A$/oz 899 873 757 806 805 Total cash cost US$/oz 931 901 710 710 596 Capital expenditure A$ million 301 177 59 117 93 A$/oz 1,553 1,248 1,025 1,110 1,023 Notional cash expenditure (NCE) US$/oz 1,608 1,287 962 978 757 General Total Employees Costed (TEC) number 808 796 778 766 699 Mineral Reserves Mt 25.8 37.9 32.7 30.6 30.1 Mineral Reserves head grade g/t 2.6 2.3 2.7 2.3 2.4 Mineral Reserves Moz 2.2 2.8 2.8 2.3 2.3 Expected Life of Mine years 6 7644 1 Figures shown represent the six months to 31 December 2010. Rounding off of figures presented in this report may result in minor computational discrepancies. Where this occurs it is not deemed significant. Gold Fields – St Ives Gold Mine – Technical Short Form Report 2012 3 4.
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